I think an indoor wild mouse coaster could work here. Compact ride system, and newer ones have loops, beyond 90 degree drops, zero G rolls, etc. Plus, you could add car "drifting" features pretty easily. Couple that with great theming throughout the ride, some brake section AA scenes (like The Mummy), and you have a AAA thrill attraction in a compact footprint. Wild mouse coasters tend to be outside and have cutsy themes, if any, but I think the potential is there for a lot more, especially if it's all/mostly indoors. An outdoor section like Test Track would be neat though.